313 lines
12 KiB
C
313 lines
12 KiB
C
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/* header file for DIO boards for the HP300 architecture.
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* Maybe this should handle DIO-II later?
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* The general structure of this is vaguely based on how
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* the Amiga port handles Zorro boards.
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* Copyright (C) Peter Maydell 05/1998 <pmaydell@chiark.greenend.org.uk>
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* Converted to driver model Jochen Friedrich <jochen@scram.de>
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*
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* The board IDs are from the NetBSD kernel, which for once provided
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* helpful comments...
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*
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* This goes with drivers/dio/dio.c
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*/
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#ifndef _LINUX_DIO_H
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#define _LINUX_DIO_H
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/* The DIO boards in a system are distinguished by 'select codes' which
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* range from 0-63 (DIO) and 132-255 (DIO-II).
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* The DIO board with select code sc is located at physical address
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* 0x600000 + sc * 0x10000
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* So DIO cards cover [0x600000-0x800000); the areas [0x200000-0x400000) and
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* [0x800000-0x1000000) are for additional space required by things
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* like framebuffers. [0x400000-0x600000) is for miscellaneous internal I/O.
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* On Linux, this is currently all mapped into the virtual address space
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* at 0xf0000000 on bootup.
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* DIO-II boards are at 0x1000000 + (sc - 132) * 0x400000
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* which is address range [0x1000000-0x20000000) -- too big to map completely,
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* so currently we just don't handle DIO-II boards. It wouldn't be hard to
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* do with ioremap() though.
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*/
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#include <linux/device.h>
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#ifdef __KERNEL__
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#include <asm/hp300hw.h>
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typedef __u16 dio_id;
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/*
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* DIO devices
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*/
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struct dio_dev {
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struct dio_bus *bus;
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dio_id id;
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int scode;
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struct dio_driver *driver; /* which driver has allocated this device */
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struct device dev; /* Generic device interface */
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u8 ipl;
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char name[64];
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struct resource resource;
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};
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#define to_dio_dev(n) container_of(n, struct dio_dev, dev)
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/*
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* DIO bus
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*/
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struct dio_bus {
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struct list_head devices; /* list of devices on this bus */
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unsigned int num_resources; /* number of resources */
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struct resource resources[2]; /* address space routed to this bus */
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struct device dev;
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char name[10];
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};
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extern struct dio_bus dio_bus; /* Single DIO bus */
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extern struct bus_type dio_bus_type;
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/*
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* DIO device IDs
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*/
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struct dio_device_id {
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dio_id id; /* Device ID or DIO_WILDCARD */
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unsigned long driver_data; /* Data private to the driver */
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};
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/*
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* DIO device drivers
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*/
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struct dio_driver {
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struct list_head node;
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char *name;
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const struct dio_device_id *id_table; /* NULL if wants all devices */
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int (*probe)(struct dio_dev *z, const struct dio_device_id *id);
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/* New device inserted */
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void (*remove)(struct dio_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */
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struct device_driver driver;
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};
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#define to_dio_driver(drv) container_of(drv, struct dio_driver, driver)
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/* DIO/DIO-II boards all have the following 8bit registers.
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* These are offsets from the base of the device.
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*/
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#define DIO_IDOFF 0x01 /* primary device ID */
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#define DIO_IPLOFF 0x03 /* interrupt priority level */
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#define DIO_SECIDOFF 0x15 /* secondary device ID */
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#define DIOII_SIZEOFF 0x101 /* device size, DIO-II only */
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#define DIO_VIRADDRBASE 0xf0000000UL /* vir addr where IOspace is mapped */
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#define DIO_BASE 0x600000 /* start of DIO space */
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#define DIO_END 0x1000000 /* end of DIO space */
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#define DIO_DEVSIZE 0x10000 /* size of a DIO device */
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#define DIOII_BASE 0x01000000 /* start of DIO-II space */
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#define DIOII_END 0x20000000 /* end of DIO-II space */
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#define DIOII_DEVSIZE 0x00400000 /* size of a DIO-II device */
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/* Highest valid select code. If we add DIO-II support this should become
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* 256 for everything except HP320, which only has DIO.
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*/
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#define DIO_SCMAX (hp300_model == HP_320 ? 32 : 256)
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#define DIOII_SCBASE 132 /* lowest DIO-II select code */
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#define DIO_SCINHOLE(scode) (((scode) >= 32) && ((scode) < DIOII_SCBASE))
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#define DIO_ISDIOII(scode) ((scode) >= 132 && (scode) < 256)
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/* macros to read device IDs, given base address */
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#define DIO_ID(baseaddr) in_8((baseaddr) + DIO_IDOFF)
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#define DIO_SECID(baseaddr) in_8((baseaddr) + DIO_SECIDOFF)
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/* extract the interrupt level */
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#define DIO_IPL(baseaddr) (((in_8((baseaddr) + DIO_IPLOFF) >> 4) & 0x03) + 3)
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/* find the size of a DIO-II board's address space.
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* DIO boards are all fixed length.
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*/
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#define DIOII_SIZE(baseaddr) ((in_8((baseaddr) + DIOII_SIZEOFF) + 1) * 0x100000)
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/* general purpose macro for both DIO and DIO-II */
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#define DIO_SIZE(scode, base) (DIO_ISDIOII((scode)) ? DIOII_SIZE((base)) : DIO_DEVSIZE)
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/* The hardware has primary and secondary IDs; we encode these in a single
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* int as PRIMARY ID & (SECONDARY ID << 8).
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* In practice this is only important for framebuffers,
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* and everybody else just sets ID fields equal to the DIO_ID_FOO value.
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*/
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#define DIO_ENCODE_ID(pr,sec) ((((int)sec & 0xff) << 8) | ((int)pr & 0xff))
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/* macro to determine whether a given primary ID requires a secondary ID byte */
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#define DIO_NEEDSSECID(id) ((id) == DIO_ID_FBUFFER)
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#define DIO_WILDCARD 0xff
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/* Now a whole slew of macros giving device IDs and descriptive strings: */
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#define DIO_ID_DCA0 0x02 /* 98644A serial */
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#define DIO_DESC_DCA0 "98644A DCA0 serial"
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#define DIO_ID_DCA0REM 0x82 /* 98644A serial */
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#define DIO_DESC_DCA0REM "98644A DCA0REM serial"
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#define DIO_ID_DCA1 0x42 /* 98644A serial */
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#define DIO_DESC_DCA1 "98644A DCA1 serial"
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#define DIO_ID_DCA1REM 0xc2 /* 98644A serial */
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#define DIO_DESC_DCA1REM "98644A DCA1REM serial"
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#define DIO_ID_DCM 0x05 /* 98642A serial MUX */
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#define DIO_DESC_DCM "98642A DCM serial MUX"
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#define DIO_ID_DCMREM 0x85 /* 98642A serial MUX */
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#define DIO_DESC_DCMREM "98642A DCMREM serial MUX"
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#define DIO_ID_LAN 0x15 /* 98643A LAN */
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#define DIO_DESC_LAN "98643A LANCE ethernet"
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#define DIO_ID_FHPIB 0x08 /* 98625A/98625B fast HP-IB */
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#define DIO_DESC_FHPIB "98625A/98625B fast HPIB"
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#define DIO_ID_NHPIB 0x01 /* 98624A HP-IB (normal ie slow) */
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#define DIO_DESC_NHPIB "98624A HPIB"
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#define DIO_ID_SCSI0 0x07 /* 98265A SCSI */
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#define DIO_DESC_SCSI0 "98265A SCSI0"
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#define DIO_ID_SCSI1 0x27 /* ditto */
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#define DIO_DESC_SCSI1 "98265A SCSI1"
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#define DIO_ID_SCSI2 0x47 /* ditto */
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#define DIO_DESC_SCSI2 "98265A SCSI2"
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#define DIO_ID_SCSI3 0x67 /* ditto */
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#define DIO_DESC_SCSI3 "98265A SCSI3"
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#define DIO_ID_FBUFFER 0x39 /* framebuffer: flavour is distinguished by secondary ID */
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#define DIO_DESC_FBUFFER "bitmapped display"
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/* the NetBSD kernel source is a bit unsure as to what these next IDs actually do :-> */
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#define DIO_ID_MISC0 0x03 /* 98622A */
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#define DIO_DESC_MISC0 "98622A"
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#define DIO_ID_MISC1 0x04 /* 98623A */
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#define DIO_DESC_MISC1 "98623A"
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#define DIO_ID_PARALLEL 0x06 /* internal parallel */
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#define DIO_DESC_PARALLEL "internal parallel"
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#define DIO_ID_MISC2 0x09 /* 98287A keyboard */
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#define DIO_DESC_MISC2 "98287A keyboard"
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#define DIO_ID_MISC3 0x0a /* HP98635A FP accelerator */
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#define DIO_DESC_MISC3 "HP98635A FP accelerator"
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#define DIO_ID_MISC4 0x0b /* timer */
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#define DIO_DESC_MISC4 "timer"
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#define DIO_ID_MISC5 0x12 /* 98640A */
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#define DIO_DESC_MISC5 "98640A"
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#define DIO_ID_MISC6 0x16 /* 98659A */
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#define DIO_DESC_MISC6 "98659A"
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#define DIO_ID_MISC7 0x19 /* 237 display */
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#define DIO_DESC_MISC7 "237 display"
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#define DIO_ID_MISC8 0x1a /* quad-wide card */
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#define DIO_DESC_MISC8 "quad-wide card"
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#define DIO_ID_MISC9 0x1b /* 98253A */
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#define DIO_DESC_MISC9 "98253A"
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#define DIO_ID_MISC10 0x1c /* 98627A */
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#define DIO_DESC_MISC10 "98253A"
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#define DIO_ID_MISC11 0x1d /* 98633A */
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#define DIO_DESC_MISC11 "98633A"
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#define DIO_ID_MISC12 0x1e /* 98259A */
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#define DIO_DESC_MISC12 "98259A"
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#define DIO_ID_MISC13 0x1f /* 8741 */
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#define DIO_DESC_MISC13 "8741"
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#define DIO_ID_VME 0x31 /* 98577A VME adapter */
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#define DIO_DESC_VME "98577A VME adapter"
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#define DIO_ID_DCL 0x34 /* 98628A serial */
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#define DIO_DESC_DCL "98628A DCL serial"
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#define DIO_ID_DCLREM 0xb4 /* 98628A serial */
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#define DIO_DESC_DCLREM "98628A DCLREM serial"
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/* These are the secondary IDs for the framebuffers */
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#define DIO_ID2_GATORBOX 0x01 /* 98700/98710 "gatorbox" */
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#define DIO_DESC2_GATORBOX "98700/98710 \"gatorbox\" display"
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#define DIO_ID2_TOPCAT 0x02 /* 98544/98545/98547 "topcat" */
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#define DIO_DESC2_TOPCAT "98544/98545/98547 \"topcat\" display"
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#define DIO_ID2_RENAISSANCE 0x04 /* 98720/98721 "renaissance" */
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#define DIO_DESC2_RENAISSANCE "98720/98721 \"renaissance\" display"
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#define DIO_ID2_LRCATSEYE 0x05 /* lowres "catseye" */
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#define DIO_DESC2_LRCATSEYE "low-res catseye display"
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#define DIO_ID2_HRCCATSEYE 0x06 /* highres colour "catseye" */
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#define DIO_DESC2_HRCCATSEYE "high-res color catseye display"
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#define DIO_ID2_HRMCATSEYE 0x07 /* highres mono "catseye" */
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#define DIO_DESC2_HRMCATSEYE "high-res mono catseye display"
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#define DIO_ID2_DAVINCI 0x08 /* 98730/98731 "davinci" */
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#define DIO_DESC2_DAVINCI "98730/98731 \"davinci\" display"
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#define DIO_ID2_XXXCATSEYE 0x09 /* "catseye" */
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#define DIO_DESC2_XXXCATSEYE "catseye display"
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#define DIO_ID2_HYPERION 0x0e /* A1096A "hyperion" */
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#define DIO_DESC2_HYPERION "A1096A \"hyperion\" display"
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#define DIO_ID2_XGENESIS 0x0b /* "x-genesis"; no NetBSD support */
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#define DIO_DESC2_XGENESIS "\"x-genesis\" display"
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#define DIO_ID2_TIGER 0x0c /* "tiger"; no NetBSD support */
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#define DIO_DESC2_TIGER "\"tiger\" display"
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#define DIO_ID2_YGENESIS 0x0d /* "y-genesis"; no NetBSD support */
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#define DIO_DESC2_YGENESIS "\"y-genesis\" display"
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/* if you add new IDs then you should tell dio.c about them so it can
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* identify them...
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*/
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extern int dio_find(int deviceid);
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extern unsigned long dio_scodetophysaddr(int scode);
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extern void dio_create_sysfs_dev_files(struct dio_dev *);
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/* New-style probing */
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extern int dio_register_driver(struct dio_driver *);
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extern void dio_unregister_driver(struct dio_driver *);
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extern const struct dio_device_id *dio_match_device(const struct dio_device_id *ids, const struct dio_dev *z);
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static inline struct dio_driver *dio_dev_driver(const struct dio_dev *d)
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{
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return d->driver;
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}
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#define dio_resource_start(d) ((d)->resource.start)
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#define dio_resource_end(d) ((d)->resource.end)
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#define dio_resource_len(d) ((d)->resource.end-(d)->resource.start+1)
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#define dio_resource_flags(d) ((d)->resource.flags)
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#define dio_request_device(d, name) \
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request_mem_region(dio_resource_start(d), dio_resource_len(d), name)
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#define dio_release_device(d) \
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release_mem_region(dio_resource_start(d), dio_resource_len(d))
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/* Similar to the helpers above, these manipulate per-dio_dev
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* driver-specific data. They are really just a wrapper around
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* the generic device structure functions of these calls.
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*/
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static inline void *dio_get_drvdata (struct dio_dev *d)
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{
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return dev_get_drvdata(&d->dev);
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}
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static inline void dio_set_drvdata (struct dio_dev *d, void *data)
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{
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dev_set_drvdata(&d->dev, data);
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}
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/*
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* A helper function which helps ensure correct dio_driver
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* setup and cleanup for commonly-encountered hotplug/modular cases
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*
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* This MUST stay in a header, as it checks for -DMODULE
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*/
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static inline int dio_module_init(struct dio_driver *drv)
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{
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int rc = dio_register_driver(drv);
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if (rc > 0)
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return 0;
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/* iff CONFIG_HOTPLUG and built into kernel, we should
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* leave the driver around for future hotplug events.
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* For the module case, a hotplug daemon of some sort
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* should load a module in response to an insert event. */
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#if defined(CONFIG_HOTPLUG) && !defined(MODULE)
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if (rc == 0)
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return 0;
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#else
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if (rc == 0)
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rc = -ENODEV;
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#endif
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/* if we get here, we need to clean up DIO driver instance
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* and return some sort of error */
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|
|
dio_unregister_driver(drv);
|
||
|
|
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
#endif /* ndef _LINUX_DIO_H */
|